Printing machine



July 18, G c BAUER PRINTING MACHINE Filed Nov. 27, 1951 2 Sheets-Shet 1Fig 5 4- '41 1:: 4 4| as 551 g' 2G IN V EN TOR.

A T TORNEYS.

July 18, 1933. G. c. BAUER PRINTING MACHINE 1931 2 Sheets-Sheet 2 FiledNov. 27

' IN V EN T 0R. Gen/yr 6.500%? BY w A TTORNEYS.

-Fateiitecl July 18, 1933 earn GEORGE C. BAUER, OF SANTA MONICA,CALIFORNIA PRINTING MACHINE Application filed November 27, 1931.

This invention relates to printing press construction which is providedwith improved means for removing and replacing individual lines ofprinting type when de sired to make changes in a relat'vely small partof the type which has been set up.

The invent-ion may be applied to a great variety of printing presseswherein the type is mounted upon a rotary cylinder, but is moreespecially intended for use in relatively small hand operable printingpresses and particularly those resembling the multigraph. Printingdevices of this kind are well adapted for the use of the management of arestaurant for printing the daily menus, it usually being unnecessary tochange the greater portion of the printed menu on any given day. Theimprovement provided by this invention makes it very convenient for theoperator to change only a part of the printed matter while retaining theremainder thereof for reuse.

More specifically the invention pertains to a removable and replaceabletype bar in combination with an improved locking device, which whilereadily releasing the type bars may be depended upon to securely keepthem in the assembled or locked in position.

Other objects. advantages and features of the invention may hereinafterappear.

Referring to the accompanying drawings which illustrate what is atpresent deemed to be a preferred embodiment of the invention.

Fig. 1 is a ertical mid-section of the type cylinder together with partswhich cooperate therewith. this view being sectioned on line 1-1 of Fig.6.

4:0 2 is a fragniental elevation looking at the part of Fig, 1 adjacentthereto.

Fig. 3 is a side elevation of one of the type bars showing the same in aposition suggestive of the insertion thereof into its operativeposition.

7 Fig. 1 is an enlarged cross section of said bar taken on line 4.4 ofFig. 3.

Fig. 5 is a plan view of an end portion of the type cylinder, the viewincluding parts 50 which cooperate with said cylinder.

Serial No. 577,489.

Fig. 6 is a cross section on line 66 of Fig. 1.

Fig. 7 is an end elevation of the complete machine.

Fig. 8 is a side elevation thereof.

Fig. 9 is a plan View of one end portion of the printing cylinder.

Fig. 10 is a transverse section on line 10-1O of Fig. 9.

Referring in detail to the drawings, the operating parts of the machineare mounted upon and between the end frames 8 and 8a thus non-rotatablysupporting the main shaft 9 to which is fixed the hub portion 10a of thestationary end disc or plate 110 seen in section at the left handportion of Fig. 1, a pin 10?) desirably being used to secure the parts10 and 10a to said shaft. Said disc 10 is provided with a peripheralnotch 11 with which cooperates a radially adjustable key 12, thefunction of which will presently be described.

Upon the hub portion 10a is fitted the hub portion 13a of acircumferentially adjustable head 13, said head having therein a broadsegmental notch or cut-away portion 1 1 as shown in Fig. 6. At adistance from its periphery each wall of said notch 14 is provided witha groove 14a. When the detachable segment is in place it keeps theradially adjustable key 12 from being displaced by moving radiallyoutward during the rotation of the head 13 together with said segment.Into the cut-away portion and its grooves 14a slides a segmentalretainer 15 having at each opposite edge a bead 15a, said beads having aworking fit within the grooves 14a.

The retainer plate 15, when the same is inserted for the purpose ofretaining the type bars in place, is secured in such position desirablyby means of a. screw 1500 which extends through said plate and has itsinner portion screwed into a socket provided therefor in the inner faceof the cut-away portion 14 of the head 13. The key 12 is provided ineach of its opposite sides with a broad groove 122 and the head 13 isprovided with a radial groove 132 into which the grooved portion of thekey is slidably fitted.

Referring now more particularly to the structure shown in section in.the right hand portion of Fig. 1, the head or disc 20 shown at that endof the device is provided with a hub 2041 through which is tappeda setscrew 21 the inner end portion of said set screw extending through asleeve or bushing An inner bearing sleeve on bushing has a working itupon the adjacent portion of the shaft 9, and the set screw 21 ispreferably screwed down against this sleeve to cause the head 20 andlong sleeve to rotate therewith. An internal bearing disc 25 is securedto the head 20 preferably by means of a series of rivets or bolts 26,the inner ends of these bolts being shown as projecting through a ring27 which abuts against the left hand face of tne disc 25 as seen inFig. 1. he diameter of said disc is considerably less than the diameterof the head 20 and the type cylinder 28 has one of its ends fitted oversaid disc 25 with a working fit, that end of the type cylinder abuttingagainst the adjacent face of the head 20, said head 20 is provided inoutwardly spaced relation to said type cylinder with a lateral flange 29which aids in holding the type bars in place. The central portion of thedisc is provided with an aperture to receive the sleeve 22.

In the left hand portion of the structure as seen in Fig. 1, a head 31is provided with a central aperture whereby it is fitted with a tightpress fit upon the sleeve 22 .to turn therewith. Adjacent to this pointa bearing sleeve 32 is provided within the sleeve 22 thus affording aworking fit betwee this part of the sleeve'and the shaft 9. The head 31is provided on its inner side with an annular peripheral recess 31a intowhich is fitted with a working fit the adjacent end portion of the typecylinder 28. The head 31 is provided around its outer side with apcripheral end flange 31 into which is cut a radial slot 33 said slotalsoextending into the body portion of said head 31. lVithin said slotis secured a leaf spring 3 1 preferably by means of a screw 35. The freeouter end portion of the spring Slis provided with a bend 34a whichcoope'ates with a slight recess in the key 12 to yieldingly maintain:said key in the outer position shown in Fig; 1. When said key is securedin this position it engages a part of the slot thereby locking head 13together with its removable segment 34a to head so that at such timesaid heads 31, 13 and the segment 3 can be turned only as a unit.

hen said key 12 adjusted to its inner position gravity keeps it inplace. lVhen said key 12 is in its down position wherein it engages thenotch 11 of the oisc 10. it locks the head 13 together with the insertedsegmental plate against rotation by reason of keying these parts to thenon-rotatable disc or plate 10. The objectof this locking means is tomaintain the cut-away portion 14 (see Fig. 6) at the upper side of thedevice in or ler that the type bars may be conveniently inserted andremoved.

1 3 shows one of the channel shaped type bars 10 detached, a line oftype 4-1. being e by said bar. The type bars 10 are provided with a lineof type and are provided in av sufiicient number to print at a singleimpression a page or sheet of printed matter of the length desired. Thelength of these type bars is such that they fit snu between the heads 13and 20. One end of each 1e bar is held in place by means of flange 29 orthe head and the other end of each of said type bars is held in place bythe flange 13a. of 1 cad 13 when the type bars are loclted placepreparatory to the printing operation as will later be described. 7

Each of the type bars 40 consists of a strip of sheet metal which is ofa resilient charactm' and which is channel shaped in cross section aswell shown in Fig. 4:. This strip of metal has an outwardly deflectedlip 100. along each upper edge thereof which facilitates insertion ofthe type 41. The width benveen the two sides of the type holder 10 isnormally slightly less than the type in order that the type may beretained in'place by a gripping lit. Then the type 10 is in place in aseries of adjacent type bars assembled in the operative posiion, thelips 40a of adjacent typo bars come into contact with each other thusmaking a close fit between the type bars. This construction is necessaryowing to the fact that the lips 40a are farther from the center of thetype cylinder than is the base portion of the type bar 40 and thereforethe extra space caused by the greater distance from the center of thetype cylinder equires being compensated for.

The stop bar is attached to the type cylinder 28 in any suitable manneras by means of screws 45a, and the stop bar 4:6 has one of its endssecured to the head 20 seen in the right hand portion of Fig. 1 by anysuitable means as by the screw 20m. The other end of said stop bar 16 issecured to the other head 31 desirably by means of screw 46m.

The bar 46 forms a fixed stop and the bar 15 1s circuinferentially adustable by turning 1J-T- "I -i "(w- L the type cylinoer to whlcn saidbar so 1s a. tached. By this arrangement type ba s each furnished with aline of type, may be nserted in the desired number around the gre ..rportion of the ci 'cumference of the type cylinder 7 28. opposite sidesof the set of type bars thus inserted being engaged by the stops and 416when the stop 45 has been properly adjusted as will hereinafter befurther explained.

In Fig. 8 the outline of the driving gear 50 is indicated in dottedlines, said being fixed to a shaft 51 which is rotated. in any suitablemanner for example by means of the hand crank 52. Said driving gear 50meshes with the main driven gear 53, the latter gear being fixed to thehub 13a to provide means for rotating the type cylinder 28. The inkingroller is mounted upon the shaft 56, a. guard 57 being'interposedbetween said inking roller and the bed plate 58 over which the paperbeing printed travels. The impression roller 60 is mounted upon theshaft 61 which is driven by the gear 62, the latter gear being in meshwith the main driven gear 53. The paper is held down to the impressionroller by means of the guide rollers 65 each of which is pivotallymounted on the free end portion of an arm 66 provided therefor.

In order to lock the type cylinder 28 together with the stop bar thereofin a circumferentially adjusted position, a spring arm 70 is provided,one end ofsaid arm being secured to the type cylinder 28 by means of ascrew 71, the other end of said bar engaging yieldably within a seriesof seats or notches 7 2 which are provided in the ring 27, said notchesbeing spaced to correspond to the width of the inserted type bars.

In order to keep the spring 70 from lateral displacement, a guide 7 5 isprovided therefor which permits the spring to yield radially butprevents a sidewise movement thereof. Said guide is shown secured to thetype cylinder 28 by means of a screw 76.

At times it is necessary to lock said spring arm TO positively in one ofthe seats 7 2 with which it cooperates. For this purpose a slide 78 isprovided, said slide having at one end a tongue 7 9 which may beadjusted to extend under the free end of the spring 7 0 to keep it fromunseating from any particular seat 72.

The type cylinder wall is provided with a circumferentially extendingslot 78a near its right hand end as seen in Fig. 9. Said slot receivesthe headed pins 80 and 81, said pins both extending through said'slotwith a working lit and being spaced apart a distance somewhat less thanthe length of the slot in order that they may permit a slight movementbetween the type cylinder and the slide 78 which carries said pins. Thepin 80 has a head or knob 80a; to provide for manual adjustment of theslide. The corresponding head of the other pin 81 travels in acountersink S6 in order that it may move underneath the type bar d5.

Said spring 70 when locked in a seated position in one of the seats 7 2prevents relative rotation between the type cylinder 28 and the head 20and consequently prevents a relative movement between the type retainingbars l5 and 46. After a complete set of type bars together with typemounted upon them has been put in place upon the type cylinder and thetwo bars 45 and i6 have been brought into snug engagement with the outersides of the outside type bars of the set, then the locking featurewhich has just been described opthe production of printed matter, theoperator will rotate the crank 52 with one hand and with the other handwill feed the paper to the machine in the well known manner followed inoperating the inultigraph type of printing device.

It will also be seen that the slide 78 is frictionally slidable withinthe cylinder 28 by the pressure exerted by spring member 95.

' Owing to the fact that the type cylinder extends around the peripheryof the head 25' with aworking lit and that said cylinder, separatelyconsidered, consists of an open ended sleeve and has the releasablelocking arm 70 mounted upon its inner surface, a simple construction isprovided wherein the means for adjusting the head 25 and the sleeve 28with relation to each other is housed in a workman-like manner.

I claim:

1. In a printing cylinder of the kind described, in combination, ashaft, a pair of heads turnably mounted upon said shaft in spacedrelation to each other, a type cylinder which separately consideredconsists ofan open ended sleeve having its end portions mounted uponsaid heads with a working fit, said cylinder being circumferentiallyadjustable with relation to both of said heads,

a set of type bars for said cylinder, means a portion of which ismounted on the inner surface of said sleeve to releasably maintain saidtype cylinder in the adjusted position wlth relation to one of saidheads, such head being provided with a peripheral flange adapted to holdsaid type bars in their operative position and said cylinder having atype retaining bar extending therealong, and a third circumferentiallyadjustable mounted upon said shaft at the other end of the type cylinderfrom the last recited head, said third head being provided with meanswhich in one of its circumferential. positions locks the type bars inplace and in another position releases said type bars.

2. In a printing device of the kind described, in combination, a shaft,a head turnably mounted upon said shaft, said head having around oneface thereof a corner recess, a type cylinder one end portion of whichis turnably fitted within said recess and which is flush with theperiphery of said head adj acent to said recess, means to turnablysupport the other end portion of said cylinder upon said shaft, a set oftype bars which are adapted to be mounted upon said cylinder with endportions overlying said recess together with the remaining portion ofthe head which is provided with said recess, and

head

means to releasably lock said type bars in their aforesaid operativeposition.

3. In a printing device of the kind described, in combination, a shaft,a type cylinder, means to rotatably support said cylinder upon saidshaft, said means including a head .at one end of said cylinder mountedupon said shaft-,said head and cylinder being rotationally adjustablewith relation to each other, a non-rotating part upon which said head ismounted, a radially adjustable key acting between said head and part, aset of type bars mountable upon said cylinder, said head being providedwith a detachable segment for the purpose of locking one end of saidtype bars in the operative position upon said cylinder and releasingsaid type bars for removal, and cooperating means to hold the other endsof said type bars in place in the operative position, said segment, whenin place serving to prevent outward displacement of said key.

4'. Ina printing device of the kind described, the combination with aprinting cylinder, means to support the same, said means including anon-rotatable shaft; a set of type bars for mounting upon the peripherythere of, a hub member fixed to said shaft, a head member mounted toturnabout said hub member, saidhead member being provided with a cutawayportion to facilitate the insertion of the type bars in their operativeposition upon the periphery of said cylinder, and a locking device whichin one position cooperates with said hub member to lock said headagainst rotation with relation to said shaft to maintain its cut-awayportion uppermost and in another position permits a turning movement ofsaid head around said hub member and said shaft.

GEORGE C. BAUER.

